Related: here is how to calculate the expected number of days. Though I did not add in BitCoin specific parameters. But suppose you need to have zeros in the fi

Related: here is how to calculate the expected number of days. Though I did not add in BitCoin specific parameters. But suppose you need to have zeros in the first k bits, I suppose the probability for each lottery ticket/number is (256-k)/256 (I assume that SHA256 has 256 bits, too lazy to look it up). http://blog.blinker.net/2011/02/08/expected-number-of-coin-tosses-until-you-get-tail/ http://blog.blinker.net/2011/02/08/expected-number-of-coin-t... At the moment I generate about 5BTC/day with my dual-core ATI graphics card. Two months ago (when I started), it was twice that.